Machine



(No Model.)

4 Sheets- Sheet 1. J. K.' BENWAY.

DADOING MACHINE.

No. 291,865. Patented Jan. 15.1884.

(No Model.) 4 Sheets-Sheet 3.

DADOING MACHINE.

No. 291,888. 13818111881 Jan. 15, 1884.

(No Model.) A 1 4 Sheets-Sheet 4. J. K. BENWAY.

ADoING MACHINE. V N0. 291,865. Patented Jan. 15. 1884.

IIIIIII llllllllxlllll go jecting ends, a', which slide in grooves pro-.of the adjustable stop or spacer.

rtree.

JAMES K. BEVAY, OF ALBANY, NEV YORK..

MACHINE.

SPECIFICATION forming part of Letters Patent No. 291,865, dated January15, 188.1.

Application filed February 23, 1883. (No model.)

1"@ LU whom it 71u07/ concern:

Be it known that I, JAMEs K. Runway, a citizen of the United States, anda resident of Albany, in the county of .Albany and State of New York,have invented certain new and useful Improvements in Dadoing-Machines,and I do hereby declare the following to be a full, clear, and exactdescription of the same, referencebeing had to the accompanyingdrawings, in which Figure I represents a front view of my improveddadoing-machine. Fig. 2 represents an end view. Fig. 3 is aplan view ofthe traveling frame. Fig. et is a plan view of the machine. Figs. 5, 6,and 7 are detail views of the cutting-head. 'Fig'. Sis a detail view Myinvention consists in a machine principally for dadoing pigeon-holes,stair-strings, step-ladders, book-racks, &c. It can also be used toadvantage in center-beading panels that are too wide for ordinarymolding-1naehines.

rIhe operator is supposed to stand in front 4of the machine, as shownat- Fig. l.

Referring to the drawings, A represents a traveling frame having ahandle, a, by means of which it may be moved by the opera-tor, the saidframe being also provided with four provided vfor that purpose in theadjustable frames I I. The traveling frame A has `a cuttinghead, A',turning with the shaftA, receiving motion from the pulley-wheel A,connected by the belt a to the upper pulley-wheel, I).

B represents a counter-shaft j ournaled in the tilting frame C, thelatter having abalancingweight, l), at its farther end. y The tiltingframe C is hung in the suspending-bracket O.

E and E are pivot -blocks with an adjustable connecting rod or rods, D.By constructing the rod of two pieces, as shown, it can be adapted torooms of any height. The rods D are provided at each end with straps,which encircle the pivot-blocks E and E', the former being placed uponaxle A, a-nd the whole is so arranged that while the machine is runningat full speed and the traveling head moving backward and forward theadjusting-rods and the tilting mechanism may adapt the upper shaft, B,and the driving-belt to the position of the traveling frame A, and thesaid belt will always sustain an invariable tension. By means of thescrew .I the traveling frame A may be raised or lowered, therebyadapting it to any depth` of cut. The said screw Jhas two worm-screws, jj, which gear with the pinions j upon the spindles j, bearing at theirlower ends in the brackets s, and at their upper ends provided withscrews turning in the depending brackets i of the adjustable frames I I.The screw-shaft J is also provided with a bevel-gear, m, which connectsit to similar adjusting mechanism at the rear of the machine. By thismeans the traveling frame A and adjustable frames I I are easily raisedor lowered, and when in any desired position they are rigidly held byset-screws h it of the rests II I-I, moving in vertical slots.

G G are laterally-placed chucks of the vertical carriage or bed F.

Y The cutting or dadoing head A is constructed of two pieces, each piecehaving a set of sawteeth, t, and a cutting-edge, e. rlhe teeth areadapted to cut the shoulder of the dado, the cutting-edges removing thedbris of the groove.

To enlarge the dado or groove, itis onlynecessary to separate thetwoportions of the head A', and insert between them a washer such as shownin Fig. 7. If it is desired to increase the width still further, thewasher maybe removed and the cutting-points shownin Fig. 6 are sub`stituted. These washers and cutting-points may be increased to anynumber desired, and may be used together or separately, as described.

F represents a carriage adapted to move vertically in the frame of themachine, and it is provided with lifting-pieces j', pivoted to thefoot-lever M. The lever M is pivoted at t in hangers t of the frame. Thecarriage F and piece f are provided with a screw, Q, forregulating theconnection between the two.

The machine is adapted to make any number of eases of pigeon-holes orother similar work, and it is only necessary in doing so to lay out ormark one piece. This piece is passed into the machine, as shown at N inFig. 2. The operator then places his foot on the lever M, pressing itdown, by which means the carriage F is raised. The piece N is held bythe chucks G G of the bed and the rest H. The traveling IOC) long.

frame A is then drawn forward until within such distance from theface-edge as maybe desired. rIhen by means of a suitable screw it isadjusted in the frame I I. 'By liberating the lever M the carriage Fwill descend, permittine the traveling frame to be moved to the rear ofthe machine. The piece N is then adjusted to the next line for dadoing.This operation is repeated until the pattern is complete. This piece isthen removed, and a small nail or screw is driven through each end andfiled off sharp, leaving the points about one-eighth of an inch It isthen replaced in the machine upside down,but with the same edge to thefront, and it is passed far enoughto allow the stop Kto drop into thefirst cut or groove. The screw Q is turned and the carriage Fis lowered,thereby making a greater space for the successive pieces to be operatedon. Another piece is placed upon the pattern-piece, theintervening spurspreventing; them from slipping from each other.

The stop K is directly under the cutter A', so

that by the repetition of the operation before described the patternwill necessarily be duplicated. Such pieces as are required to be dadoedon both sides are then put through the machine without the use of thepattern,which operation will bring the grooves opposite to each other.These pieces are of course adapted to hold shelves on both sides.

In the manufacture of step-ladders or stairstrings, a narrow bar isplaced'on the front side ofthe bed F and fastenedto a chuclqG, at oneend and secured by means of a thumb-screw to the bed at the other, andat such an angle as required for the pitch of the stair or step.

By referring to Fig. S it will. be seen that of the two stops K K theformer is stationary, and is always on a line with the cutting-head A',and the latter is capable of adjustment by means of the screw L. In thefigure referred to they are shown in a line with each other, and in thatposition will enter the smallest dado, and so, also, by turning thescrew L, K can be moved along, so that they will fill any width of dadodesired.

The stops are attached to spring-pieces, as shown, so that when workingwithout a pattern or in making a pattern they can be pressed down andout oi' the way.

It can easily be seen that the power acquired by the foot-lever is suchthat no matter what the condition ofthe wood may be-for instance, if itis warped or otherwise bent-the pressure of the said lever and itssuperimposed carriage will straighten it.

The screw .I and its connecting-gear may be substituted, if desired, bya screw, similar to Q, placed in each of the raised parts of rest H.

Any novel subject-matter which I have described but not claimed in thisapplication is hereby reserved to be claimed in future applications.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

l. The combination of the adj listing-frame and the traveling framehaving means of adj ustmcnt, as described, the said traveling framebeing provided with acentral shaft, connected by means of a driving-beltand adjustable rod or rods to a tilting frame having a shaft andbalancing-weight, the whole adapted to operate substantially as setforth.

2. In a dadoing or other molding machine, the combination,with aweighted driving-pulley, of a laterally-traveling frame carrying thecutter-head and adapted to be guided in its path by suitable tonguesengaging in horizontal grooves in a frame having' means for verticaladjustment, substantially as described, and for the purposes set forth.

In a dadoing or other molding machine, the combinatiomwith a travelingframe carrying the cutter-head, of a vertically-moving work-tableoperated by a foot-lever having pivotal bearings in the stationary frameand a` set-screw for regulating its movement, as set forth.

4. In combination with the dadoing-niachine, the spacing, detaining, andduplicating' mechanism` consisting of stops arranged as described, oneof said stops being provided with an adjusting-screw, as and for thepurposes 'set forth.

